The NZXT FZ series airflow fans come in both 120mm and 140mm sizes, designed to provide better CFM-to-dBA ratio compared to the standard NZXT FN fan series. The NZXT FZ series airflow fan uses a 13-blade spinning at 1200rpm for the 120mm version and 1000rpm for the 140mm version. The NZXT FZ airflow series fans are also available with white, blue, orange, green and red LED color variants so you can match your case's design. Each rifle bearing NZXT FZ series fan is rated up to 40,000 hours of operation and carries a 2-year warranty.